Compilare: main.cpp: In function 'void built()': main.cpp:14:28: warning: unused variable 'tata' [-Wunused-variable] 14 | int nod=q.front(), tata; | ^~~~ main.cpp: In function 'int main()': main.cpp:48:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 48 | for(int i=0; i<g[x].size(); i++) | ~^~~~~~~~~~~~